Cholera Toxins. Produced by Vibrio cholerae, cholera toxin (CT) is a multimeric enterotoxin that transfers ADP-ribose to a G protein, locking adenylate cyclase in an 'on' position.
echinoderm. n. 1. (Animals) any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers.ny of various invertebrate sea animals having a hard spiny outer covering, an internal skeleton, and a radially symmetrical body. Starfish, sea urchins, and sea cucumbers are echinoderms.
For educational use only. The phylum Echinodermata, which contains about 6000 species, gets its name from the Greek, literally meaning spiny skin.. Many echinoderms actually do have spiny skin, but others do not.This phylum exists exclusively in the sea, and cannot be found on land or in fresh water.or educational use only. The phylum Echinodermata, which contains about 6000 species, gets its name from the Greek, literally meaning spiny skin.. Many echinoderms actually do have spiny skin, but others do not.